(25) a Matrix Approach to a Propagation Code

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An extract from a Matrix Approach to a Propagation Code, AFIT (School of Engineering), Air University, DEC 1977

Appendix C
Sample Calculator Programs
The following pages contain two sample calculator programs for a single propagation scenario as an example of how the matrix formulation may be used on a hand calculator. The first program … The second program is designed for a Hewlett Packard HP 25.
The propagation scenario that the programs solve is the co-altitude transmission of a laser beam from a transmitter to a receiver over a distance L in propagation steps of distance z. The beam has some initial power P and radius x and is assumed to be focused at a point distance L away.
Because the effect of turbulence is small compared to thermal blooming, it is not included in these programs. If desired, however, it may be added.

the HP-25 program starts on page 30.

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